baber/WOPTO huggingface dataset:
Patent GB-1507079-A (GB)
Title: Device for monitoring the quality of radio relay links
IPC: H04B17/00
Filed: 1975-06-24
Abstract: 1507079 Testing telecommunications system DE STAAT DER NEDERLANDEN TE DEZEN VERTEGENWOORDIGD DOOR DE DIRECTEURGENERAAL DER POSTERIJEN TELEGRAFIE EN TELEFONIE 24 June 1975 [17 July 1974] 26750/75 Heading G1U In monitoring the quality of a radio relay link, the average noise power/minute and average baseband load/minute are measured and compared to predetermined reference levels, the exceeding of which is signalled. For noise measurement, a filter 3 defines a 7 kHz band about the appropriate frequency (4765 kHz or 4830 kHz for 960 or 1800 channel systems respectively), this signal is mixed with an appropriate local oscillator 5 signal to provide a 65 kHz imput to an i.f. stage 6, providing variable gain (60-100 dB) and noise band width definition (3À1 kHz). To measure instantaneous noise power, integrated square-law generators 11, 12 are used. Since each of these has only 25 dB dynamic range, two alternate channels are provided. At low levels comparator 16 connects resistor 17 to the following integrator 13, such that an amplifier 15 (20 dB) is inserted into the measurement. At levels 20 dB above the minimum input, comparator 16 switches over to resistor 18, and square-law generator 12 is brought into operation. The values  of the resistances 17, 18 are chosen such that their ratio equals the square of the amplifier gain, ensuring that the change-over provides a continuous response function over 45 dB of dynamic range. The integrators 13, 14 use two capacitors alternately. allowing the non-used one to discharge during the period of one minute in which the other is charging. A comparator 19 has a variable low level reference and drives a l.e.d. 36. The comparator 20 responds to a higher fixed reference. To measure the baseband load, a baseband filter 26 comprising highpass, low-pass and pre-emphasis filter 33-35 provides a signal to a thermocouple square-law generator 27, integrator 28 and comparators 29-32 having references at the nominal level,  3 dB and + 6 dB. All the comparator outputs drive l. e. d.'s and their outputs are fed to a buffer register 37 which is up-dated at the end of every one minute period. A divide by 3000 clock 25 derives timing signals for the register and integrators from the 50 Hz mains frequency.
Patent GB-943814-A (GB)
Title: Improvements in amusement apparatus
IPC: A63G19/20
Filed: 1961-07-25
Abstract: 943,814. Amusement apparatus. D. S. WILES. July 23, 1962 [July 25, 1961], No. 26815/61. Heading A6M. [Also in Division G4] Amusement apparatus comprises a seat-carrying body mounted on a supporting arm mounted at one end on a movable member and carrying a roller which moves along a track when the arm is moved by the movable member, the track being such that an up and down movement is given to the arm. As described, a horse is detachably secured to a pair of rods 12 upstanding from a link 13 pivotally mounted on a movable arm 16 and carrying a pair of rollers 22 arranged to run on inclined tracks 23. The arm 16 is coupled to a crank 26 secured to crank-shaft 27 driven by an electric motor 31. A timing wheel 33 driven by friction by shaft 27 has a laterally projecting peg 33 arranged to engage an arm 38 to operate switch 41 to break the circuit of the motor after one revolution. The apparatus is operated by a coin inserted in slot 42 which trips switch 46 to render operative the motor circuit. A further switch 47 arranged in the circuit is operated by rod 48 under the control of a child sitting on the apparatus to complete the circuit. A relay 51 with control 52 is provided, whereby the apparatus can be stopped at any time by a person other than the rider. The track member may be formed with a concave, convex or wavy surface or may be pivotally mounted and means may be provided for oscillating it. The movable member may also be carried by a platform which is arranged for oscillation in upward and downward direction.
Patent GB-963047-A (GB)
Title: Improvements in or relating to mobile washing and spin-drying machines
IPC: D06F34/20
Filed: 1962-07-12
Abstract: 963,047. Washing-machines. CONSTRUCTAWERKE G.m.b.H. July 12,1962 [July 20, 1961], No.26876/62. Heading D1A. In a mobile washing and spin-drying machine having castors 11 and other supports 12, either castors or supports being extendable or retractable by hydraulic means, a safety device (Fig. 2) prevents commencement of the spin-drying operation so long as the machine is supported by the castors. As shown, a support 12, which is extended, together with supports 12<SP>1</SP>, 12<SP>11</SP>, when a pressure medium is supplied through a valve 16, is fitted with a feeler 19<SP>1</SP> which closes contact 21 when the support touches floor 20. This closure causes contact 24 to close, in the current circuit 25 of a relay 26, the relay 26 being able to initiate the spin-drying operation on closure of a further switch (not shown). The supports 12 may be extended by means of electro-magnetic valve 16, either when the drum attains a certain sub-critical speed, or prior to starting the washing operation by a programme regulator 17 which retracts the supports again after the washing cycle is complete. The drum system 1 is oscillatably mounted by springs 8. In a machine having retractable castors the feeler 19<SP>1</SP> would be operated by one of these on retraction.
Patent GB-1412518-A (GB)
Title: Vocoders
IPC: G10L19/02
Filed: 1973-06-06
Abstract: 1412518 Vocoders SIEMENS AG 6 June 1973 [6 June 1972 13 June 1972] 26955/73 Heading H4R In a digital channel vocoder for generating synthetic speech, pulses from a pitch frequency or noise generator, according as the " speech " is voiced or unvoiced, are duration (rather than amplitude) modulated with the spectral envelope parameter in the respective band-pass filter channel. As shown, the coded spectral envelope A, B, C for one channel is temporarily stored 1 for 20 ms. (equivalent to a TDM scanning period for the channels) and read-out under command of transfer pulse UP from an input 11 through a binary counter 41 with a device 31 which presents to zero all those stages of the counter 41 for which the output of a code converter 22, common to all channels, provides a one. Pulses at 5 MHz for unvoiced and 1 MHz for voiced speech, determined by parameter TS on line 23, pass to the converter 22 which generates a series ZJ of 7 pulses whose distance from a start pulse SJ derived from a pitch generator 24 or noise generator 25 is in each case doubled. The counter output via NAND gate 51 represents the duration-modulated output of that channel and resets the counter via gate 13 when all counter stages are at one. The synthesis unit precedes or follows a bandpass filter and the channels may include amplifier stages 91. Amplitude modulation of amplifier stages in the channels may be superimposed on the duration modulation. In one modification (Fig. 3, not shown) there is a code converter (2) for each channel instead of the central unit 22 and this generates a 7-bit spectral envelope code from a 3-bit code which may have been stored or transmitted, the presetting device (3) setting a seven-stage counter (4) according to the code converter output. Alternatively (Fig. 5, not shown) the spectral envelope code A, B, C may be fed to an IC selector (6) which, according to the code, selects the appropriate one of a succession of pulses of geometrically increasing spacing (corresponding to those from the central code converter above) to operate a flip-flop 7 to stop passage of the pitch or noise pulses SJ to the output, thereby duration-modulating them. Digital generation of the pitch frequency is preferred by successive binary division of a pulse sequence (TT0), each stage output feeding NAND gates also receiving the inverted sequence (TT0) and an element of the spectral code. The combined pulse train is divided (163) to bring it down to the desired rate and routed through a monostable (164) to provide regular pulses.
Patent GB-677760-A (GB)
Title: Improvements relating to heating devices for beds
IPC: A47C21/04
Filed: 1950-11-06
Abstract: 677.760. Electric bed warmers. EDMUNDS A Nov 23 1950 [Nov 6 1950] No 26997/50 Class 39(iii) [Also in Group XIII] In a brass bed-warmer, hot air, e.g. from an electric hair drier, is applied to a perforated tube 2 which telescopes into an outer perforated tube 1. Moreover, guards 4 are secured to the outer tube 1 and a guard 10 is secured near one end of the inner tube 2, guards 9 being slidably mounted on this latter tube to allow of its sliding into the outer tube. The guards are in the form of rings 5, Fig. 3, each having flat portions 6 and being connected to a central ring 12 by spokes 7. A flat strip 8 braces together the guards 4. The hot air may be supplied through a short, third tube 3 fitted into the inner tube 2.
Patent GB-1470601-A (GB)
Title: Cyanine dyes and their use as spectral sensitizers in direct positive photographic materials
IPC: C09B23/06
Filed: 1974-06-18
Abstract: 1470601 Cyanine dyes MINNESOTA MINING & MFG CO 18 June 1974 [18 June 1973] 27037/74 Heading C4P [Also in Divisions C2 and G2] Cyanine dyes comprise a first heterocyclic nucleus containing a 5- or 6-membered heterocyclic ring linked by a methine linkage to a second heterocyclic nucleus or a para-aminophenyl nucleus, the said first nucleus being an indole or indolenine nucleus carrying on the benzo ring thereof a benzoyl or phenylsulphonyl substituent. The dyes preferably have one of the following formulµ wherein m and p are 1 or 2; q is 1, 2 or 3; n is 2, 3 or 4; R and R<SP>6</SP> are each benzoyl or phenylsulphonyl ; each R<SP>1</SP> is the same or different and is H, or optionally substituted alkyl, aryl or aralkyl; R<SP>2</SP> is optionally substituted alkyl, alkenyl or aryl; R<SP>3</SP> is optionally substituted aryl; one of the two R<SP>4</SP> is H and the other is optionally substituted alkyl of 1-4 C, aryl or heterocyclyl; R<SP>5</SP> is H, halogen, nitro, alkyl, alkoxy, aryloxy, benzoyl or phenylsulphonyl; R<SP>7</SP> is optionally substituted alkyl, cycloalkyl, alkenyl or aryl; R<SP>8</SP> and R<SP>9</SP> are each alkyl; R<SP>10</SP> and R<SP>11</SP> are each optionally substituted alkyl of 1-6 C; X- is an acid anion; Z completes a sensitizing or desensitizing (each as defined in the Specification heterocyclic nucleus containing 5 or 6 atoms in the heterocyclic ring; and Q completes a keto-methylenic heterocyclic nucleus containing 5 to 6 atoms in the heterocyclic ring. The dyes are desensitizers for negative silver halide emulsions and spectral sensitizers for direct positive silver halide emulsions.
Patent GB-1214468-A (GB)
Title: Improvements in or relating to connecting devices for connecting together two flexible tubes
Inventor: SHEPHERD DENIS
IPC: F16L31/00
Filed: 1967-06-12
Abstract: 1,214,468. Tube couplings. WALTER KIDDE CO. Ltd. 6 May, 1968 [12 June, 1967], No. 27098/67. Heading F2G. A flexible tube 11 has secured thereto a flexible and resilient hoop 15 which is distorted to pass through a flexible hoop 19 of smaller diameter than the hoop 15 and secured to the end of a flexible tube 12; when released the ring 15 expands to connect the two tubes. The tube 11 may include two tubular hoops of nylon and the hoop 19 may be of wire covered with polyvinyl chloride. The tubes 11, 12 may be used in conjunction with a foam generator for fire fighting purposes.
Patent GB-280352-A (GB)
Title: Improvements in or relating to film pressure plates or pads for photographic cameras
IPC: G03B1/48
Filed: 1926-10-29
Abstract: 280,352. Houghton-Butcher Manufacturing Co., Ltd., Denniss, A. J., and Edwards, V. W. Oct. 29,1926. Magazine hand cameras for roll films.-In roll-film cameras having a plate which is manually operated to apply pressure to the portion of the film to be exposed, the operating means are - arranged externally to the camera to cover the usual ruby window or aperture during such time as pressure is applied, so that attention is directed to the necessity of relieving such pressure when the film is to be moved. As shown in Figs. 1 and 2, the pressure plate 12 is carried by a spring 14, and a nose 21 of a lever 22 presses on the spring, while an external part 24 of the lever covers the window. In Figs. 4 and 6, a lever 27 operates the plate 25 through a projection 30 on a rod 28 connected to the lever engaging a spring 26 on which the plate is mounted. In Figs. 7 and 8, a lever 34 is pivoted at 35 and carries an eccentric stud 33 passing through a slot in the camera back to engage a slot in a spring 32 carrying a plate 31, so that when the lever is moved in the direction y to uncover the window, the spring is allowed to flatten to release the plate. In a further modification, the stud withdraws a slide to remove a nose on the slide from behind a nose on the plate.
Patent GB-407109-A (GB)
Title: Improvements in or relating to syringes for subcutaneous injection
IPC: A61M5/24
Filed: 1932-09-29
Abstract: 407,109. Hypodermic syringes. RIPPSTEIN, E., 127, Reinacherstrasse, Basle, Switzerland. Sept. 29, 1932, No. 27104. Convention date, Jan. 19. [Class 81 (ii).] A hypodermic syringe has a part 4 of the body which is hingedly mounted, and longitudinally slidable on the other part 1, and is rigidly connected with a member 9 which clamps the needle 15 in position so that, when a closure cap 7 is moved forward, the parts 4 and 1 unite to form the syringe body while the clamping member 9 is accurately positioned relative to the syringe head. The part 4 is pivoted at 6 to a cylindrical slide 5 held to the cap 7 by a ring 8. The member 9 is wedge-shaped and enters a recess 10 in the syringe head, wing pieces 11 being slid -forward beneath undercut edges 13 of the head when the cap is tightened by a bayonet joint comprising a pin engaging a groove 12 in the syringe. The slide 5 is cut away at its front end and at the rear has a beading 18, Fig. 2<a>, overlapped by the margin 19 of the ring 8 which has a recess 20 through which the bead 18 can enter. The pressure rod 21 carries a claw 22 recessed at 23 to receive the plunger knob of a liquid container 25. The Specification as open to inspection under Sect. 91 states that the syringe body may carry pivots engaging slots in the needle clamping member so that a slide is dispensed with. It also includes the construction of liquid container, having both the plunger and the front closure member provided with elastic elements which expand to produce automatic sealing when the syringe is used. This subject-matter does not appear in the Specification as accepted.
Patent GB-603357-A (GB)
Title: An improved appliance for use by draughtsmen
IPC: B43L13/00
Filed: 1945-10-18
Abstract: 603,357. Tools for setting - out work. FAIREY AVIATION CO., Ltd., ATKINSON, P., and FRANCIS, C. W. Oct. 18, 1945, No. 27388. [Class 61 (ii)] [Also in Group XIX] An apparatus for use by draughtsmen comprises a known magnifying optical system 10, 11 secured to a handle 12 with feet 17, 18. Pivotally mounted to the foot 18 is a transparent arm 19 with cross-lines 20 and a stylus 21 at the same radial distance from the foot 18 as the intersection of the cross-lines 20. Illuminating means may be provided in the optical system. In a development shown in Fig. 4, the stylus 28 is fixed to a carrier 29 in rack-andpinion connection with the arm. A scale 36 is provided on the carrier and indicates zero when the stylus 28 and intersection of the cross-lines are at the same radial distance from the pivotal mounting. To mark a distance along a line, a scale is laid against the line. The apparatus is placed so that the foot 18 is almost on the line and the intersection of the cross-lines 20 is directly over the point to be marked as indicated by the scale. - The scale is removed and an arc is drawn by the stylus to intersect the line.
Patent GB-648698-A (GB)
Title: Improvements in and relating to direct-current generators
IPC: H02K23/18
Filed: 1947-10-13
Abstract: 648,698. Dynamo-electric machines. AKT.- GES. BROWN, BOVERI, & CIE. Oct. 13, 1947, No. 27420. Convention date, Oct. 12, 1946. [Class 35] In a generator with leakage extensions on one side of the main poles projecting towards the interpoles, the latter have their pole tips extending in both directions and the air gaps at the leading and trailing edges of the interpoles are unequal. As shown, the main poles N, S have shunt coils F and may have a compounding coil or they may be separately excited or some may be shunt and some separately excited. The separate excitation may be desired from a rectifier fed by the driving motor. Regulation is by brush shifting which varies the differential compound effect of the windings W on the inter-poles n, s.
Patent GB-673348-A (GB)
Title: Improvements relating to suction cleaners
IPC: A47L5/32
Filed: 1950-11-09
Abstract: 673,348. Suction cleaners. HOOVER, Ltd. Nov. 9, 1950 [Nov. 10, 1949], No. 27436/50. Class 8 (i) A handle propelled motor fan suction cleaner having a converter 62 for off-the-floor cleaning arranged to be inserted between the fan eye 19 and a belt 21 connecting the fan shaft 17 with a rotary nozzle brush 22, is provided with a shield 75 which is movable so as to close a slot at the end of the converter 62, and to receive the shaft 17 when the converter is in position ; the shield also preventing insertion when the cleaner is in normal use whilst allowing ready access of dirt laden air to the fan eye 19. The shield 75 is L-shaped and is carried by the fan casing 15 which pivots with the handle 29 so that in the upright storage position of said handle the shield registers with the slot, but not otherwise. A spring-biased inwardly opening flap 51 normally closes the converter port, and the nozzle 10 is automatically raised clear of the floor surface on swinging the handle 29 to its upright storage position. This is effected by relative depression of the front wheels 35 on abutment of a projection 48 of an arcuate casing portion 47 against an off-set middle portion 42 of a shaft 39 having off-set ends 38 carrying the wheels 35.
Patent GB-1106119-A (GB)
Title: N-aminoalkyl-dibenzoxazepines and process for their manufacture
IPC: C07D267/20
Filed: 1966-06-20
Abstract: the invention comprises 10-aminoalkyl-11-oxo - 10,11 - dihydro -dibenzo[b,f][1,4]oxazepines, in which the amino group is a secondary or tertiary amino group and is separated from the ring nitrogen atom by at least 2 carbon atoms, and which contain in at least one of the benzo-rings a nitro group; and their acid addition salts.  The benzo-rings may contain, in addition to nitro groups, other substituents, e.g. alkyl, alkoxy or alkanoyl groups or halogen atoms. The compounds are prepared by reacting an 11-oxo-10,11-dihydro-dibenzo[b,f][1,4] oxazepine, in which at least one of the benzo-rings contains a nitro group, or a salt thereof, with an aminoalkyl halide in which the amino portion is separated from the halogen atom by at least 2 carbon atoms, and optionally converting an aminoalkyl group in a compound so obtained into a different aminoalkyl group.  10 - (3 - N - Cyano - N - methyl - amino-propyl) - 2 - nitro - 11 - oxo - 10,11 - dihydro - dibenzo - [b,f][1,4] oxazepine is prepared by reacting 10 - (3 - dimethylaminopropyl) - 2 - nitro - 11 - oxo - 10,11 - dihydro - dibenzo[b,f] [1,4] oxazepine with cyanogen bromide.  10 - (3 - N - Carbethoxy - N - methyl - aminopropyl) - 2 - nitro - 11 - oxo - 10,11 - dihydro-dibenzo-[b,f][1,4] oxazepine is prepared by reacting 10 - (3 - dimethylaminopropyl) - 2 - nitro-11 - oxo - 10,11 - dihydro - dibenzo[b,f][1,4] oxazepine with ethyl chloroformate.  10 - (3 - N - Formyl - N - methyl - amino-propy) - 2 - nitro - 11 - oxo - 10,11 - dihydro - dibenzo-[b,f][1,4] oxazepine is prepared by reacting the sodium salt of 2-nitro-11-oxo-10,11-dihydro-dibenzo[b,f][1,4] oxazepine with 3-N-formyl-N-methylamino-propyl chloride. Pharmaceutical compositions having anti-acetyl-choline, anti-serotonine, anti-histamine, anti-inflammatory, local anaesthetic and anti-depressive action comprise a compound of the invention together with a carrier.
Patent GB-275743-A (GB)
Abstract: 275,743. Barker, J. H. May 21, 1926. Heating systems and apparatus.-Ovens for use in heating cordite discs 19 are fitted with a series of hollow bars on supports 4, 4<1>, 4<2>, arranged below the cover 2 to form passages for steam, hot water, or other heating medium; the passages may be lined with pipes 5. The discs are moved through the oven by means of " raising bars " 10 carried by a rising, falling, and reciprocating table 7.
Patent GB-431242-A (GB)
Title: Improvements in or relating to joint members for trestles and like supports
IPC: E04G1/32
Filed: 1934-09-26
Abstract: 431,242. Trestles. GOULD, H. W., 2734, Noyes Street, Evanston, and MATTER, A. J., 1026, North Hamlin Avenue, Park Ridge, both in Illinois, U.S.A. Sept. 26, 1934, No. 27628. Convention date, March 19. [Class 52 (v)] [See also Group X] A metal joint-piece for trestles comprises a recess at the top to receive a crossbar and internally ribbed sockets at the sides to receive inclined supporting legs which do not contact with the crossbar. The joint piece shown in Fig. 1 is of cast metal with a top recess 11 to receive a crossbar and with side sockets 13, each of which is provided with a stop 16 for the supporting leg 15 and also with legengaging ribs 19, 20 to penetrate the leg and prevent accidental displacement. The edges 17 of the top recess may be sharpened so that they penetrate the material of the crossbar and hold it firmly. In a modification Fig. 5 the joint-piece is formed from a sheet metal blank 25 as shown in Fig. 6 by cutting out the internal part and bending the remainder to form a ribbed yoke 28, the internal part 27 being divided and each portion bent around to form a band and being welded to the yoke at its edges. The portions 33 of the yoke act as stops for the legs 30 which are prevented from contacting with the crossbar 31 by downturned portions 34. The side edges 37 of the recess 32 are bent inwardly to engage the crossbar, and the edges 40 of the yoke as well as the edges 39 of the bands are bent inwardly to engage the legs.
Patent GB-1193878-A (GB)
Title: Internal Combustion Engine
IPC: F02B53/00
Filed: 1967-06-15
Abstract: 1,193,878. Combustion chambers; rotary piston I-C engines. DYNATECH CORP. June 15, 1967 [June 15, 1966; Dec. 2, 1966], No.27631/67. Headings F1B and F1F. A precombustion chamber 20 with an igniter 22 is connected through a passage 24 to the main combustion space 18 formed as a narrow elongated chamber, the hot gases flowing from chamber 20 through passage 24 at about sonic velocity. Fuel is injected into chamber 20 through nozzle 40 and fuel is also injected into the air intake passage 30 through nozzle 46. The intake and exhaust valves 26, 28, may both open on to space 18 or in Fig. 5 (not shown) the inlet valve 68 opens into the elongated combustion chamber 56 and the exhaust valve 70 opens into the main cylinder space. As applied to a rotary piston engine, Fig. 7, with inlet and outlet ports 92, 94, the rotor is formed with channels 90a, b, c, which form the main combustion space and are aligned with the passage 98 from the precombustion chamber 96 at top dead centre.